精选优质文档-倾情为你奉上1 单项选择： (每小题一分，共30分) 1. Hurry up! The play _ for ten minutes. A. has begun B. had begun C. has been on D. began 2. - When did you arrive? - I arrived _ the morning of April 18. A. in B. at C. by D. on 3. - Wheres Mary? - She _ to Harbin. A. has been B. has gone C. goes D. went 4. - Do you know Betty very well? - Yes, she and I _ friends since we met in Guangzhou last summer. A. have made B. have become C. have
